baber/WOPTO huggingface dataset:
Patent CA-2114277-A1 (CA)
Inventor: FAUCONET MICHEL
IPC: C07B61/00
Filed: 1994-01-26
Abstract: An alkyl (meth)acrylate is prepared by a direct esterification (in 1) of (meth)acrylic acid by the corresponding alcohol, catalysed by H2SO4. The crude reaction mixture (B1), comprising the targeted ester, alcohol, (meth)acrylic acid, alkyl acid sulphate (alkyl hydrogen sulphate) and traces of H2SO4, is treated (in 3) with a base in order to neutralise the acid species, the resulting salts passing into the aqueous phase (A1), which is separated from the organic phase (O1) containing the targeted ester. The light products (L1), containing the alcohol, are recovered (in 4) from the aqueous phase and the waste water (E2) is discarded. The alkyl acid sulphate present in the aqueous phase (A1) resulting from the separation carried out after the neutralisation (in 3) is hydrolysed (in 8) to form, in this phase, alcohol and H2SO4, the acid species resulting from the hydrolysis are neutralised by introduction into the medium of a base and the resulting aqueous phase (A3) is sent to the alcohol recovery stage. Pollution of the waste water (E2), attributable to the alkyl acid sulphate, is thus avoided. <IMAGE>
Patent CA-2114602-A1 (CA)
Title: Backwater Valve
Inventor: COSARELLA GABE
IPC: E03F7/04
Filed: 1994-01-31
Abstract: A backwater valve is described which includes a liquid retaining body having a top, a bottom, a first end, a second end, opposed sides and an inner chamber.  A first flow conduit extends through one of the top of the body and the first end adjacent the top of the body and protrudes into the inner chamber.  A second flow conduit extends from the inner chamber through the second end adjacent the bottom of the body and protrudes past the second end.  An annular seal is positioned on an annular peripheral edge of the first flow conduit which protrudes into the inner chamber. A plate is pivotally mounted to the body.   The plate having a wear resistant lubricious first face, a second face, a first end and a second end.  The first end underlies the first flow conduit.  The first face extends past the first flow conduit thereby serving as a spillway for liquids flowing through the first flow conduit. The plate is pivotally movable between a closed position and an open position.  In the open position the first face engages the annular seal.   In the open position the first face is spaced from the annular seal.  The plate is maintained in a normally open position by force of gravity.    A float is secured to the second face of the plate such that the plate floats into the closed position when the inner chamber is filled with liquid.
Patent CA-2114711-A1 (CA)
Title: Emulsion polymer blend of a multi-stage latex and a non-film forming latex
Inventor: SNYDER BARRY S
IPC: D06M101/00
Filed: 1994-02-01
Abstract: Abstract of the Disclosure This invention relates to a blend of at least two emulsion polymers. In particular, the emulsion polymer blend comprises from 95 to 40 percent by weight of at least one first latex and from 5 to 60 percent by weight of at least one second latex, wherein the first latex is multi-stage comprising from 95 to 50 percent by weight of at least one soft stage polymer having a Tg less than 50°C and from 5 to 50 percent by weight of at least one hard stage polymer having a Tg from about 20°C to about 160°C, and wherein the second latex is not an ambient temperature film-forming polymer. The emulsion polymer blend of this invention can be used to formulate a variety of aqueous coating compositions, such as for example, paints, mastics, caulks, sealants, varnishes, floor polishes, and the like. The emulsion polymer blend of this invention is also useful for formulating an aqueous coating composition which is coalescent-free.
Patent CA-2114856-A1 (CA)
Title: Optical streak camera
Inventor: CORKUM PAUL B
IPC: H04N5/30
Filed: 1994-02-03
Abstract: An optical streak camera for detecting a light signal representing an optical event occurring in an ultra-short time interval, comprising; a photocathode for emitting electrons; means for propagating optical radiation in free space in a predetermined region that includes the photocathode, said means for providing electrons with velocitythat depends upon the time at which they were emitted within the region of radiation; and means for collecting the electrons and for displaying an output signal characteristic of the distribution of their velocities.
Patent CA-2115460-A1 (CA)
Title: Improved mixed metal oxide crystalline powders and method for the synthesis thereof
Inventor: JOYCE IVAN H
IPC: C01G25/00
Filed: 1992-09-03
Abstract: A method for the synthesis of mixed metal oxide crystalline powders comprises the steps of preparing a raw material mixture containing at least two different metal cations; adding a template material to the mixture and blending it therewith; initiating formation of a mixed metal oxide by calcination of the mixture and the template material, whereby particles of the mixed metal oxides are formed; and thereafter recovering the mixed metal oxide particles. Mixed metal oxide crystalline powders comprise a template material; and metal oxides which form pigment classes of material containing the template material, the pigment classes being selected from the group consisting of borate, garnet, olivine, phenacite, phosphate, priderite, pyrochlore, sphene, spinet and zircon, as well as perovskite crystal classes of material containing the template, all of which have a uniform particle morphology and particle size ranging between about 0.2 to 100 with minimal comminution.
Patent CA-2121246-A1 (CA)
Title: Novel thrombin-inhibitory protein from ticks
Inventor: FRIEDRICH THOMAS
IPC: C12N15/15
Filed: 1992-09-23
Abstract: The invention relates to a novel thrombin-inhibiting protein from ticks with a molecular weight of some 26000 Dalton and which has the amino acid partial sequences Val-Ala-Lys-Phe-Ala-X-Asn-Ser-Gly-Ser-Glu-Thr-Gly, His-Ala-Y-Phe-Glu, Arg-Val-Ser-Asp-Phe-Glu and Phe-Val-Tyr-Thr-Ile-Glu, in which X and Y may be the same or different and stand for a naturally occurring amino acid. The protein is suitable for combatting diseases.
Patent CA-2125069-A1 (CA)
Title: Method and device for determining rheological properties
Inventor: HEMMINGS RAYMOND THOMAS
IPC: G01N11/14
Filed: 1994-06-03
Abstract: ABSTRACT            A method and device for the measurement of rheological properties of high density slurry materials and in particular high density mill tailings.  A sample of the tailings is placed within a mixing tub, with either a concentric paddle or a planetarily movable paddle used to effect the mixing.  A digitally controlled electric motor is used to directly drive the paddle at a constant or predetermined speed or speeds.  The tub is laterally pivotable against a load cell for a direct determination of reaction torque with correlation to viscosity and other rheological properties of the mill tailing.
Patent CA-2126216-A1 (CA)
Title: 7'-amino-naphthazarin antibiotic derivatives
Inventor: TRANI ALDO
IPC: C07D493/20
Filed: 1992-11-30
Abstract: New naphthazarin derivatives of formula (I) obtained by introducing in the 7' position of Purpuromycin or .gamma.-Rubromycin an amino or a monosubstituted amino group. The compounds of the invention show antibiotic activity against Gram positive and Gram negative microorganisms, fungi and protozoa and are suitable for the treatment of vaginal infections. Compounds of formula (IV) and (V) are also claimed.
Patent CA-2132209-A1 (CA)
Title: Combinations of parasympathomimetic agents with muscarinic antagonists for treating nicotine craving in smoking cessation
Inventor: CALLAWAY ENOCH
IPC: A61K31/40
Filed: 1993-03-11
Abstract: A method for relieving craving in a nicotine-habituated patient and a composition for treating the patient is provided. The composition administered has a non-specific acethylcholine agonist and a muscarinic antagonist. A particularly preferred composition for relieving craving takes the form of a tablet where the first component is a water soluble physostigmine and the second component is a water soluble scopolamine. Patients treated have reported a slight increase in alertness and a diminished craving for nicotine.
Patent CA-2132338-A1 (CA)
Title: Simple two-component zero-halogen flame retardant
Inventor: LINDSAY ALAN J
IPC: C08G79/02
Filed: 1993-04-21
Abstract: A flame-retardant additive is provided comprising a source of phosphorus and a polymer or oligomer which is a phosphorus/nitrogen-containing oligomer or polymer. These additives are found to be particularly suitable for use in polymer materials when used in combination with a second and different source of phosphorus, resulting in an additive having reduced smoke generation, reduced evolution of corrosive gases and improved flame-retarding properties.
Patent CA-2132578-A1 (CA)
Inventor: BROWN J MARTIN
IPC: A61K33/243
Filed: 1994-09-21
Abstract: The present invention provides methods for treating mammalian cancer tumors, preferably solid tumors, comprising administering to a mammal in need of such treatment an effective amount of a 1,2,4-benzotriazine oxide as defined in Formula I or pharmacologically acceptable salts of said compound; and administering to the mammal from about one half hour to about twenty-four hours after administering the 1,2,4-benzotriazine oxide an effective amount of a chemotherapy agent to which the tumor is susceptible. The invention also provides kits for treatment of such tumors which comprise a chemotherapy agent and a cytotoxicity-enhancing amount of a 1,2,4-benzotriazine oxide as defined in Formula I.
Patent CA-2133643-A1 (CA)
Title: Method and device for detection of nucleic acid or analyte using total internal reflectance
Inventor: BOUMA STANLEY R
IPC: C12Q1/68
Filed: 1993-04-05
Abstract: An apparatus and method for detecting amplified target nucleic acid is provided wherein the presence and concentration of amplified target is determined by total internal reflection over the course of the amplification reaction. A method and apparatus for detecting target nucleic acid is also provided wherein the presence and concentration of target is determined by total internal reflection and coupling of the target to the TIR element by scissile linkage. An improved immunoassay using total internal reflection and differential temperature cycling is further provided.
Patent CA-2134164-A1 (CA)
Title: Combination of Adjusting Shim and Cam
Inventor: IZUMIDA HIROMU
IPC: F01L1/047
Filed: 1994-10-24
Abstract: A combination of an adjusting shim and a cam used in a valve train in an internal combustion engine for automobiles, the adjusting shim composed of a ceramic material which sets the surface roughness of a sliding surface of the adjusting shim with respect to a cam to not more than 0.1 µm in ten-point mean roughness Rz, and which contains not less than 60 vol.% of silicon nitride or sialon, and the cam composed of cast iron a surface of which is chill hardened and then provided with a phosphate film thereon.  The combination of an adjusting shim and a cam is capable of smoothing a sliding surface of the cam by the break-in of the part even if the cam is not subjected to a super-precision finishing process; preventing the seizure and abnormal abrasion of sliding surfaces; stabilizing a smoothed condition of the sliding surfaces of the cam and shim for a long period of time; and providing excellent sliding characteristics of the sliding surfaces owing to a decrease in the friction coefficient thereof.
Patent CA-2134896-A1 (CA)
Title: Variable reluctance drive system
Inventor: LIPO THOMAS A
IPC: H02K41/02
Filed: 1993-05-10
Abstract: A variable reluctance drive system including a motor and corresponding converter for improved current commutation. The motor incorporates a salient pole rotor (16) and a salient pole stator (10) having one or more full pitch windings (20) which operate by mutual inductance to transfer the current from the active short pitch winding following phase alignment (each short pitch winding comprising two short pitch coils A1-2, B1-2 or C1-2). This increases output torque and/or speed and permits a number of simple and economical converter circuits (Figs. 7-11).
Patent CA-2135992-A1 (CA)
Inventor: CHARLIER ANDRE
IPC: A61M3/02
Filed: 1994-11-16
Abstract: 12 DISPOSITIF POUR INJECTER UNE SOLUTION DANS LE CORPS D'UN ORGANISME Dispositif pour injecter une solution dans le corps d'un organisme à des fins thérapeutiques et/ou diagnostiques, ledit dispositif comprenant : * une deuxième amenée (1) d'une solution sur laquelle est montée une vanne (2) ; * une première amenée (3) d'une solution sur laquelle est montée une vanne (4) ; * un système de chauffage (5) de solution provenant de la deuxième amenée (1) et/ou première amenée (3), et * un éjecteur ou sortie (6) ledit système de chauffage comprenant : * une chambre (7) dans laquelle s'étend une résistance électrique (8) non isolée de la solution à chauffer, ladite résistance (8) étant associée à un organe de commande (9) de l'énergie électrique amenée à la résistance (8) ,et * un système de régulation de l'énergie électrique amenée à ladite résistance (8) recevant un signal d'un capteur de température (11) de la solution sortant de la chambre (7) de chauffage et un signal d'un moyen (12,13) définissant la température désirée et émettant un signal de commande vers l'organe de commande (9); au moins une (2) desdites vannes émettant un signal vers un moyen (17) destiné à corriger le signal émis par le système de régulation (10).(figure 1)
Patent CA-2136405-A1 (CA)
Inventor: HATTORI NORIYASU
IPC: A63B53/04
Filed: 1994-11-22
Abstract: A golf club having one end of a shaft rigidly connected to a club head and the other end having a gripping surface. The club head includes an upright putting surface with a putting face thereon and an angled chipping surface with a chipping face thereon. The shaft is rigidly mounted perpendicular to the club head and centrally along the length of the club head. The putting face is upright and substantially parallel to the shaft of the golf club. The putting face is designed for use in putting a golf ball. The chipping face is angled or sloped relative to the shaft and is designed for use in chipping a golf ball.
Patent CA-2140685-A1 (CA)
Title: Bus master arbitration circuitry having improved prioritization
Inventor: BONELLA RANDY M
IPC: G06F13/364
Filed: 1995-01-20
Abstract: An arbiter which allows retried requests to have high priority  in  subsequent  arbitrations by not changing priority on a granted, but aborted, access to the bus and yet prevents the aborted requestor from thrashing the bus by masking its bus request signal until the data is available.  Further, should an access to main memory be retried, all bus requests except the one from the memory system are masked to provide the memory system the highest  effective  priority  to  allow  any  flushing operations to occur.   The masking of the various bus requests allows the arbiter to control access to a PCI standard bus without requiring that specific signals be added.  The arbiter further includes modified priority LRU techniques and provides a locking requestor with an additional, highest priority position if retried.
Patent CA-2142733-A1 (CA)
Title: Impact modification of thermoplastics
Inventor: SILVIS H CRAIG
IPC: C08L23/12
Filed: 1993-09-15
Abstract: Compositions having good low temperature impact performance made from a thermoplastic (e.g., a polyolefin such as polypropylene) and either at least one linear ethylene/C5-C20 .alpha.-olefin or at least one substantially linear ethylene/C3-C20 .alpha.-olefin polymer are disclosed. The compositions are easily molded and have particular utility in making automotive facia, parts and other household articles.
Patent CA-2145131-A1 (CA)
Title: Protease for treating devitalized tissue
Inventor: CINI JOHN K
IPC: C12N9/50
Filed: 1995-03-21
Abstract: The invention provides a novel enzyme capable of debridement of devitalized tissue derived from bromelain stem extract having a molecular weight in the range of from about 17,000 to about 22,000 daltons and methods for extracting and using this  enzyme  for  the removal  of eschar.
Patent CA-2145222-A1 (CA)
Title: Multistandard video decoder and decomposition system for processing encoded bit streams including start codes and methods relating thereto
Inventor: WISE ADRIAN PHILIP
IPC: H04N7/50
Filed: 1995-03-22
Abstract: A pipeline video decoder and decompression system handles a plurality of separately encoded bit streams arranged as a single serial bit stream of digital bits and having separately encoded pairs of control codes and corresponding data carried in the serial bit stream. The pipeline system employs a plurality of interconnected stages to decode and decompress the single bit stream, including a start code detector. When in a search mode, the start code detector searches for a specific start code corresponding to one of multiple compression standards. The start code detector responding to the single serial bit stream generates control tokens and data tokens. A respective one of the tokens includes a plurality of data words. Each data word has an extension bit which indicates a presence of additional words therein. The data words are thereby unlimited in number. A token decode circuit positioned in certain of the stages recognizes certain of the tokens as control tokens pertinent to that stage and passes unrecognized control tokens to a succeeding stage. A reconfigurable decode and parser processing means positioned in certain of the stages is responsive to a recognized control token and reconfigures a particular stage to handle an identified data token. Methods relating to the decoder and decompression system include processing steps relating thereto.
Patent CA-2146382-A1 (CA)
Title: Variable reluctance start permanent magnet motor
Inventor: HORST GARY E
IPC: H02K1/06
Filed: 1995-04-05
Abstract: Abstract of the Disclosure A single-phase permanent magnet motor (10).  A stator assembly (12) includes a stator (14) having a central bore (16) and a plurality of salient poles (18a-18d) extending into the bore.  A rotor (13) is positioned within the bore and is rotatable relative to the stator.  A magnet (22) installed on the rotor is used to position the rotor in a stable detent or parked position to facilitate starting the motor.  The magnet is a ring magnet formed on the rotor and the magnet has a plurality of magnetic ring segments (24a-24d) extending circumferentially about the ring.  Each ring segment is shaped to provide a constant level of flux across the ring segment.  Each stator has an indentation (36) at one end for aligning the rotor with the stator in its parked position.  The result is the availabilty of more starting torque to start the motor than is available in other motor constructions.
Patent CA-2147634-A1 (CA)
Title: Virtual retinal display
Inventor: FURNESS THOMAS ADRIAN III
IPC: G02B27/01
Filed: 1993-10-04
Abstract: A virtual retinal display utilizes photon generation and manipulation to create a panoramic, high resolution, color virtual image that is projected directly onto the retina of the eye without creating a real or an aerial image that is viewed via a mirror or optics (18). The virtual retinal display includes a source of photons (12), the photons being modulated (14) with video information (40) and scanned in a raster type of pattern directly onto the retina of the user's eye. The photon generator (12) may utilize coher-ent or non-coherent light. Further, the photon generator may utilize color light generators (80, 82, 84) so as to scan a colored virtu-al image directly onto the retina of the user's eye. The virtual retinal display may also include a depth accommodation cue to vary the focus of scanned photons rapidly so as to control the depth perceived by a user for each individual picture element of the vir-tual image. Further, an eye tracking system (106) may be utilized to sense the position of an entrance pupil of the user's eye, the detected pupil position being utilized to move the scanned photons so as to be approximately coincident with the entrance pupil of the eye.
Patent CA-2149800-A1 (CA)
Title: Copper smelting apparatus
Inventor: KIKUMOTO NOBUO
IPC: C22B15/00
Filed: 1995-05-19
Abstract: A copper-smelting apparatus for processing of copper concentrates to produce blister copper requiring relatively low capital cost and land area is presented. The apparatus combines batch smelting processing to produce copper matte with continuous processing to produce blister copper, and all the components of the facility are built above the ground level.      The apparatus includes a batch operated smelting furnace, a transport facility for transporting molten matte, and a continuous converting furnace for continuous production of blister copper by continuously receiving and processing the matte received from the transport facility. A holding container may be provided for temporarily holding the molten matte transported by the transport facility. The matte is delivered by gravity from the transport facility or the holding container to the continuous converting furnace through a first launder.      The blister copper produced in the continuous converting furnace is delivered by gravity through a specified second launder to a specified refining furnace for the production of anode copper.
Patent CA-2152930-A1 (CA)
Title: Copper hydrides as co-catalysts for polymerization
Inventor: KELSEY DONALD R
IPC: C08F4/60
Filed: 1993-12-20
Abstract: An improved olefin metathesis catalyst system is disclosed. The catalyst system comprises a transition metal halide metathesis catalyst and an organo transition metal hydride co-catalyst of the formula R'x - Cu - H. The copper hydride co-catalyst of this invention has the general formula R'x - Cu - H wherein R' is a complexing ligand preferably an organically substituted phosphine, and x is 1 or 2. The organic substituents on the phosphine group are optionally substituted C1-C20 hydrocarbons, such as C1-20 alkyls or alkenyls, C3-20 cycloalkyls or cycloalkenyls having 3 to 8 carbon atoms in the ring, or optionally substituted C6-20 aryl or fused aryl. The optional substituents on the hydrocarbons include halogens, preferably chloride and fluoride; C1-6 alkyl; C1-C6 alkenyl; or C1-C6 alkoxy. The co-catalysts of this invention are combined with molybdenum, tungsten, or tantalum metathesis catalysts to provide an active catalytic system for the polymerization of cycloolefins, particularly dicyclopentafiene.
Patent CA-2154350-A1 (CA)
Title: Aluminum nitride powder having a reduced ammonia odor and a method for preparing the same
Inventor: HOWARD KEVIN E
IPC: C01B21/072
Filed: 1993-10-27
Abstract: An aluminum nitride powder that has substantially no ammonia odor after exposure to atmospheric moisture is obtained placing the powder in operative contact, such as by admixing, with a gettering compound that sublimes or decomposes at a temperature below 500 °C. Admixing is one method of obtaining operative contact. The gettering compound is a C1-C11 aliphatic carboxylic mono- or polyfunctional acid, an anhydride or an ester of such an acid or an anhydride of an aromatic carboxylic acid.